Carbon fiber winding shell rotary curing system with internal monitoring function

Abstract

The utility model belongs to the technical field of carbon fiber shell curing, and particularly relates to a carbon fiber winding shell rotary curing system with an internal monitoring function. The device comprises a rotating shaft arranged in a curing oven and a core mold arranged on the rotating shaft, the carbon fiber winding shell is formed by winding a plurality of layers of carbon fiber composite materials on the core mold; the plurality of FBG sensors are respectively embedded in each winding layer of the carbon fiber winding shell; the optical fiber sensor demodulator and the wireless signal transmitting device are installed on the rotating shaft and located on the outer side of the curing oven. According to the utility model, the plurality of FBG sensors are embedded in the carbon fiber winding shell, so that the curing process of the carbon fiber winding shell can be subjected to uninterrupted strain and temperature real-time monitoring, and meanwhile, the demodulator is matched with the wireless signal transmitting module; the problem that in the prior art, traditional monitoring equipment and instruments cannot meet the monitoring requirement of internal stress and strain in the rotating and curing process of the carbon fiber winding shell is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon fiber shell curing, and in particular relates to a carbon fiber winding shell rotating curing system with an internal monitoring function. Background Art

[0002] The carbon fiber wound shell is formed by impregnating carbon fiber with resin and then winding and curing it on a core mold. Carbon fiber wound shells are mostly used in complex environments and need to ensure the reliability and stability of the structure. During the curing process of the carbon fiber wound shell, the generation of thermal strain and curing shrinkage strain will cause the formation of residual stress and structural deformation, which may cause damage to the shell and affect the structural strength and performance of the composite material. Therefore, the carbon fiber wound shell needs to be detected in real time during the curing process.

[0003] Traditional monitoring equipment and instruments such as strain gauges, accelerometers, piezoelectric ceramic patches and piezoelectric film sensors cannot meet the monitoring needs of internal stress and strain of complex structures such as carbon fiber wound shells. They need to be combined with more advanced structural health monitoring technologies to monitor the mechanical properties of the structure in real time, which makes the monitoring equipment have cumbersome monitoring procedures and high cost investment characteristics.

[0004] At the same time, after the carbon fiber wrapped shell is cured, only external components can be used to detect the external deformation of the shell, and the internal stress and strain cannot be detected, which affects the safety of the shell. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects in the prior art that the existing monitoring equipment and instruments cannot meet the monitoring needs of the internal stress and strain of the carbon fiber wound shell, and provide a carbon fiber wound shell rotating curing system with internal monitoring function that can monitor the stress, strain and other data in the carbon fiber shell curing process in real time.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A carbon fiber winding shell rotation curing system with internal monitoring function, comprising:

[0008] A rotating shaft placed in the curing oven and a core mold mounted on the rotating shaft;

[0009] A carbon fiber wound shell, wherein the carbon fiber shell is formed by winding multiple layers of carbon fiber composite material on the core mold;

[0010] A plurality of FBG sensors are distributed and buried inside the carbon fiber wound shell;

[0011] The optical fiber demodulator and the wireless signal transmitting device are installed on the rotating shaft and located outside the curing furnace, rotate with the rotating shaft, and are used to demodulate the FBG optical fiber sensing signal to obtain temperature strain data and send real-time wireless signals;

[0012] During the carbon fiber composite material winding process, the FBG sensor is arranged in a plurality of winding layers of the carbon fiber winding shell.

[0013] Furthermore, it also includes a rotating motor, the output shaft of the rotating motor is coaxially arranged with the rotating shaft, and the rotating motor is arranged outside the curing furnace.

[0014] Furthermore, it also includes a rotating seat for supporting the rotating shaft and a motor mounting seat arranged on the ground for mounting the rotating motor.

[0015] Furthermore, the FBG sensor is connected to the optical fiber demodulator and the wireless signal transmitting device by a high temperature resistant metal connector;

[0016] The high temperature resistant metal joint is fixed on the rotating shaft by using high temperature transparent tape.

[0017] Furthermore, the optical fiber demodulator and wireless signal transmitting device includes a demodulator and a wireless transmitting module, which transmits the temperature and strain data inside the carbon fiber shell detected by the FBG sensors in real time.

[0018] Furthermore, the demodulator and the FBG sensor are connected by a high temperature resistant metal joint, which is convenient for housing assembly and disassembly and optical fiber line arrangement.

[0019] Furthermore, it also includes a remote host computer for displaying real-time collected data, and the remote host computer receives the sensor data sent by the optical fiber demodulator and the wireless transmission module in the wireless signal transmitting device.

[0020] The beneficial effects of the carbon fiber winding shell rotation curing system with internal monitoring function of the utility model are:

[0021] The utility model embeds a plurality of FBG sensors inside the winding layer of the carbon fiber winding shell, which can perform uninterrupted real-time monitoring of strain and temperature during the curing process of the carbon fiber winding shell, solving the problem that traditional monitoring equipment and instruments in the prior art cannot meet the monitoring demand for stress and strain inside the carbon fiber winding shell, and a signal receiving device for receiving real-time detection data is installed on the rotating shaft. During the rotation and curing process of the carbon fiber winding shell, the signal receiving device can rotate with the rotating shaft, solving the problem in the prior art that the monitoring equipment and instruments are arranged on the outside of the shell, and the thickness of the carbon fiber winding shell is uneven due to interference from the connecting wires, which affects the use quality.

[0022] The utility model adopts a demodulator with a wireless signal transmission module, which solves the problem that traditional monitoring equipment and instruments in the prior art cannot meet the monitoring needs of internal stress and strain during the rotational curing process of the carbon fiber wound shell. At the same time, a high-temperature resistant metal joint is used to connect the FBG sensor and the demodulator line, which facilitates the loading and unloading of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Figure 1 It is a structural schematic diagram of a carbon fiber winding shell rotation curing system according to an embodiment of the utility model.

[0025] Figure 2 It is a perspective view of a carbon fiber wound shell according to an embodiment of the present utility model.

[0026] Figure 3 It is a cross-sectional view of a carbon fiber wound shell according to an embodiment of the present utility model.

[0027] Figure 4 It is a schematic diagram of the connection between a high temperature resistant metal joint and a signal receiving device according to an embodiment of the utility model.

[0028] Figure 5 It is a schematic structural diagram of a high temperature resistant metal joint according to an embodiment of the utility model.

[0029] Figure 6 It is a data transmission diagram of an embodiment of the utility model.

[0030] In the figure: 1. rotating shaft, 2. carbon fiber wound shell, 21. head section, 22. barrel section, 3. FBG sensor, 4. signal receiving device, 5. rotating seat, 6. motor mounting seat, 7. rotating motor, 8. remote host computer, 9. curing furnace, 10. high temperature resistant metal joint. DETAILED DESCRIPTION

[0031] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0032] like Figure 1-Figure 6The specific embodiment of the carbon fiber winding shell rotation curing system with internal monitoring function of the utility model shown in the figure comprises: a rotating shaft 1, a core mold installed on the rotating shaft 1, a carbon fiber winding shell 2, a plurality of FBG sensors 3, and an optical fiber demodulator and a wireless signal transmitting device 4, wherein the rotating shaft 1, the core mold and the carbon fiber winding shell 2 are arranged in a curing furnace 9, the carbon fiber composite material is wound on the core mold in multiple layers to form the carbon fiber winding shell 2, and a plurality of FBG sensors 3 are respectively buried in the carbon fiber winding shell 2. Specifically, during the winding process of the carbon fiber composite material, the FBG sensor 3 is arranged in the head section 21 and the barrel section 22 of the carbon fiber winding shell 2. The optical fiber demodulator and the wireless signal transmitting device 4 are installed on the rotating shaft 1, rotate with the rotating shaft 1, and are used to receive the data information of the FBG sensor 3 monitoring transmission in real time, that is, to demodulate the monitoring signal of the FBG sensor 3 and perform real-time wireless transmission.

[0033] The rotary curing system of this embodiment embeds a plurality of FBG sensors 3 in the inner winding layer of the carbon fiber wound shell 2, which can perform real-time and uninterrupted detection of temperature, stress and strain during the curing process of the carbon fiber wound shell 2, thereby solving the problem that traditional monitoring equipment and instruments in the prior art cannot meet the monitoring needs of the internal stress and strain of the carbon fiber wound shell 2, and an optical fiber demodulator and a wireless signal transmitting device 4 for receiving real-time detection data are installed on the rotating shaft 1. During the rotational curing process of the carbon fiber wound shell 2, the optical fiber demodulator and the wireless signal transmitting device 4 can rotate with the rotating shaft 1, thereby solving the problem in the prior art that the monitoring equipment and instruments are set on the outside of the shell, and the thickness of the carbon fiber wound shell 2 is uneven due to the interference of the connecting wires and the inability to perform curing while rotating, which affects the quality of use.

[0034] It should be understood that if Figure 1 As shown, the embodiment of the utility model also includes a rotating motor 7, the output shaft of the rotating motor 7 is coaxially arranged with the rotating shaft 1, and the rotating motor 1 is arranged on the outside of the curing furnace 9. It should be further explained that the present embodiment also includes a rotating seat 5 for supporting the rotating shaft 1 and a motor mounting seat 6 arranged on the ground for mounting the rotating motor 7. When in use, the rotating shaft 1 is supported by the rotating seat 5, wherein the rotating seat is also provided with two guide wheels that rotate with each other, and the rotating shaft is arranged between the two guide wheels to reduce rotational friction. The motor mounting seat 6 supports and mounts the rotating motor 7. The arrangement of the rotating seat 5 and the motor mounting seat 6 ensures that the rotating shaft 1 can drive the carbon fiber winding shell 2 to rotate and solidify under the drive of the rotating motor 7.

[0035] like Figure 4 As shown, the FBG sensor 3 is connected to the optical fiber demodulator and the wireless signal transmitting device 4 by using a high-temperature resistant metal joint 10, and the high-temperature resistant metal joint 10 is fixed on the rotating shaft 1 by using a high-temperature transparent tape.

[0036] In this embodiment, the fiber demodulator and wireless signal transmitting device 4 include a fiber Bragg grating demodulator and a wireless transmitting module, which transmit the temperature and strain data inside the carbon fiber shell 2 detected by several FBG sensors 3 in real time. The fiber Bragg grating demodulator calculates the central wavelength monitored by the FBG sensor 3 to obtain the strain and temperature changes at each position during the curing process of the composite material shell. And it is sent to the remote host computer 8 through the wireless transmitting module to avoid the complicated and cumbersome structure caused by the connection line between the fiber demodulator and the remote host computer 8, and the interference problem caused by the curing while rotating. Both the FBG sensor 3 and the fiber Bragg grating demodulator are available on the market, and their specific use principles are not described in detail here. In this embodiment, the FBG fiber sensor 3 is pre-embedded in the shell winding process, and the FBG fiber sensor 3 uses a high temperature resistant metal joint to transfer the FBG fiber sensor 3 to the wireless demodulator attached to the rotating shaft 1, so as to realize the real-time and continuous reception of strain and temperature signals during the shell rotation curing process.

[0037] This embodiment uses a demodulator in combination with a wireless transmission module, which solves the problem that traditional monitoring equipment and instruments in the prior art cannot meet the monitoring needs of internal stress and strain during the rotational curing process of the carbon fiber wrapped shell 2. At the same time, a high-temperature resistant metal joint 10 is used to connect the FBG sensor 3 with the demodulator line, which facilitates the loading and unloading of the carbon fiber wrapped shell 2.

[0038] like Figure 6 As shown, the rotary curing system of this embodiment also includes a remote host computer 8 for displaying real-time collected data. The remote host computer 8 receives the sensor data sent by the wireless signal sending module, and displays the position information, real-time strain data and temperature data of the FBG sensor 3, giving the monitoring personnel more intuitive data information feedback. The remote host computer 8 receives the wireless sensor signal and displays the strain field and temperature field changes of each point of the shell in real time. Multiple FBG sensors 3 are wired with the fiber grating demodulator, and wireless signal transmission is also used between the fiber grating demodulator and the remote host computer 8, ensuring that the rotary curing system of the utility model can monitor the carbon fiber wound shell 2 while rotating, curing and monitoring, and of course it is also applicable to the function of not rotating, curing and monitoring, and has a wide range of applicable scenarios.

[0039] It needs to be further explained that the carbon fiber wound shell 2 is mostly used as a consumable material. After a certain service life, it must be monitored for safety, which requires a large amount of production and maintenance costs. The carbon fiber wound shell 2 obtained by curing with the rotary curing system of this embodiment can also perform real-time monitoring during the use of the carbon fiber wound shell 2 because the FBG sensor 3 is buried inside the carbon fiber wound shell 2, that is, in the winding layer. No external monitoring equipment is required, which saves monitoring costs during use. It is simple and reliable and can transmit monitoring information in a timely manner.

[0040] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A carbon fiber winding shell rotation curing system with internal monitoring function, characterized in that: include: A rotating shaft (1) placed in a curing furnace (9) and a core mold mounted on the rotating shaft (1); A carbon fiber wound shell (2), wherein the carbon fiber wound shell (2) is formed by winding multiple layers of carbon fiber composite material on the core mold; A plurality of FBG sensors (3) are respectively embedded in each winding layer of the carbon fiber winding shell (2); The optical fiber demodulator and wireless signal transmitting device (4) are mounted on the rotating shaft (1) and located outside the curing furnace (9), rotate along with the rotating shaft (1), and are used to demodulate the monitoring signal of the FBG sensor (3) and perform real-time wireless transmission.

2. A carbon fiber winding shell rotation curing system with internal monitoring function according to claim 1, characterized in that: It also comprises a rotating motor (7), the output shaft of the rotating motor (7) being coaxially arranged with the rotating shaft (1), and the rotating motor (7) being arranged outside the curing furnace (9).

3. The carbon fiber winding shell rotation curing system with internal monitoring function according to claim 2, characterized in that: It also includes a rotating seat (5) for supporting the rotating shaft (1) and a motor mounting seat (6) arranged on the ground for mounting the rotating motor (7).

4. The carbon fiber winding shell rotation curing system with internal monitoring function according to claim 1, characterized in that: The FBG sensor (3) is connected to the optical fiber demodulator and the wireless signal transmitting device (4) by means of a high temperature resistant metal joint (10); The high temperature resistant metal joint (10) is fixed on the rotating shaft (1) by using a high temperature transparent tape.

5. The carbon fiber winding shell rotation curing system with internal monitoring function according to claim 4, characterized in that: The optical fiber demodulator and wireless signal transmitting device (4) comprises a demodulator and a wireless transmitting module, and transmits the temperature and strain data inside the carbon fiber wound shell (2) detected by the plurality of FBG sensors (3) in real time.

6. A carbon fiber winding shell rotation curing system with internal monitoring function according to claim 5, characterized in that: The demodulator and the FBG sensor (3) are connected using the high temperature resistant metal joint (10).

7. The carbon fiber winding shell rotation curing system with internal monitoring function according to claim 5, characterized in that: It also includes a remote host computer (8) for displaying real-time collected data, wherein the remote host computer (8) receives the sensor data sent by the wireless transmission module.

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